Do Vitamins or Minerals (Apart From Lithium) Have Mood-Stabilizing Effects?

Nutritional scientists have been well funded by agribusiness to find ways to deal with factors that interfere with animal health, including aggressive and destructive behavior. When farm animals become "violent"—when pigs start biting each others’ ears and tails, when chickens attack chickens—farmers have learned that the aggressive behavior can be reduced by adding certain minerals and vitamins to their diet, without the need for veterinary intervention.